G68 Digital Surround Controller
Installation Guide
P r e f a c e
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• Read the instructions.
• Keep these instructions.
• Follow all instructions.
• Do not use this apparatus near water.
• Clean only with a dry cloth.
• Install only in accordance with the manufacturer’s instructions.
• Refer all servicing to approved service personnel.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE.
This apparatus has been designed with Class 1 construction and
must be connected to a mains socket outlet with a protective
earthing connection (the third grounding pin).
This apparatus uses a single-pole power switch. As a result it is
not isolated from AC mains power when switched off at the rear
panel. The apparatus may be isolated from mains power either by
unplugging the power connector from the rear of the unit, or by
unplugging the connector at the opposing end of the power cord
or cable from its supply outlet. As a result, either or both of these
connectors should remain accessible
Safety warnings
• Do not expose the product to dripping or splashing.
• Do not place any object filled with liquid, such as a vase, on the
product.
• Do not place naked flame sources, such as lighted candles, on the
product.
To avoid interference
Do not position the product:
• Near strong magnetic radiation, such as near a power amplifier.
• Near to a television, or where connecting cables may be subject
to or cause interference.
To avoid overheating
• Leave at least 10cm around the equipment to ensure sufficient
ventilation.
Do not position the product:
• In direct sunlight.
• Near heat sources, such as a radiator.
• Stacked with any other audio products, as the heat it generates
may damage the other products.
• On a soft surface, such as a carpet, which would obstruct the
ventilation holes in the base.
The product normally runs warm to the touch.
Radio interference
FCC Warning: This equipment generates and can radiate radio
frequency energy and if not installed and used correctly in
accordance with our instructions may cause interference to radio
communications or radio and television reception. It has been type-
tested and complies with the limits set out in Subpart J, Part 15 of
FCC rules for a Class B computing device. These limits are intended
to provide reasonable protection against such interference in home
installations.
EEC: This product has been designed and type-tested to comply
with the limits set out in EN55013 and EN55020.
Important safety instructions
C o n t e n t s
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Contents
Introduction 1
Provides information about the digital surround controller
models, a description of each product, and technical
specifications.
Specifications
3
Installing the digital surround
controller 5
Describes how to install the digital surround controller and
connect it to the other equipment in the system.
Unpacking 5
Audio inputs 6
Audio outputs 10
Tuner and communications connections 16
Configuring the digital surround
controller 19
Explains how to configure the digital surround controller
using the front-panel controls.
Configuration Wizard 19
Stage 1: Resetting the product 20
Stage 2: Configuring speakers 22
Stage 3: Configuring sources 24
Calibrating the system 29
Describes how to fine-tune the digital surround controller
to achieve the optimum performance from your sources and
speaker layout.
Introduction 29
Calibration tests 31
Speaker size 33
Using the Sine/Sub/Sens controls 34
DSP presets 37
Gives details of the DSP presets and their parameters, and
describes how to modify them.
DSP presets 37
Defining your own presets 47
Troubleshooting 49
Provides suggested solutions to problems while installing,
configuring, or operating the product.
Maintenance 53
Service and guarantee 54
Index 55
P r e f a c e
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Copyright and acknowledgements
Sales and service in the UK
Meridian Audio Ltd
Latham Road
Huntingdon
Cambridgeshire
PE29 6YE
England
Tel +44 (0)1480 445678
Fax +44 (0)1480 445686
World Wide Web – http://www.meridian-audio.com/
Copyright © 2003-2010 Meridian Audio Ltd
Designed and manufactured in the UK by Meridian Audio
Ltd. Meridian Audio reserves the right to make changes and
improvements to any of the products described in this document
without prior notice.
Dolby, Dolby Digital, Pro Logic, AC-3, PLII, PLIIx, AAC, and the
double-D symbol are trademarks of Dolby Laboratories Licensing
Corporation. Lucasfilm, THX, and THX Cinema are registered
trademarks of Lucasfilm Ltd. Surround EX is a jointly developed
technology of THX and Dolby Laboratories, Inc and is a trademark
of Dolby Laboratories, Inc. All rights reserved. Used under
authorisation. DTS is a registered trademark of Digital Theatre
Systems Inc. MPEG is a registered trademark of the MPEG
organisation. Ambisonic is a registered trademark of Nimbus
Records Ltd. Trifield is a trademark of Trifield Productions Ltd.
LaserDisc is a trademark of Pioneer Electric Corp.
Boothroyd|Stuart Meridian, Meridian, Meridian Digital Theatre, and
Sooloos are registered trademarks of Meridian Audio Ltd.
Part no: GSC/5 (P89569)
Sales and service in the USA
Meridian America Inc
8055 Troon Circle
Suite C
Austell
GA30168-7849
USA
Tel +1 (404) 344 7111
Fax +1 (404) 346 7111
This guide was produced by Human-Computer Interface Ltd,
http://www.interface.co.uk/
Manufactured under license from Dolby Laboratories, Lucasfilm Ltd.
(US patents 5,043,970;5,189,703;5,222,059. European patent
0323830), Trifield Productions Ltd, and Nimbus Records Ltd.
MHR: This product incorporates patented copyright protection
technology and intellectual property of Meridian Audio Ltd.
This technology is provided for the express purpose of securely
containing copyright audio within the Meridian System only.
Reverse engineering or circumvention of this protection is strictly
prohibited.
I n t r o d u c t i o n
1
Introduction
This guide provides full information about unpacking the G68 Digital Surround Controller,
connecting it to the other equipment in the system, and configuring it using the front panel.
Once you have connected and configured the product, refer to the
G Series System Guide
for
information about operating it.
The G68 is a powerful, flexible surround controller, and represents
the centrepiece of the G Series range. It provides eight balanced
analogue outputs, eight digital outputs, component video
switching, and Meridian Room Correction.
At the heart of the G68 is a powerful DSP engine consisting of five
Motorola 56367s running at 150MHz – delivering an incredible
750MIPS (million instructions per second) capability. Processing
is performed at high sample rates and with 48-bit precision
throughout, ensuring that all filtering, processing, and other
operations are carried out beyond the limits of human hearing. The
G68 is thus a perfect processor for the very latest in digital audio.
Inputs
Analogue signals are converted via a 24-bit Delta-Sigma converter
to high-sample-rate digital on input to the processor, while all
digital signals are reclocked to minimise jitter and maintain total
data integrity. The G68 includes two six-channel S/PDIF digital
inputs (coax), a USB audio input, four stereo TOSlink optical inputs,
and six more stereo coax digital inputs. In addition, there is a six-
channel analogue input, and five stereo analogue inputs.
Formats supported
The G68 combines controller and surround processor functions,
meeting the latest THX specifications and including MPEG, DTS,
Dolby, Trifield, and Ambisonic decoding. In many cases the decoders
incorporate our own code, giving them superior integration with
the Meridian design philosophy, as well as superior performance.
As a result, the G68 can decode surround signals from all PCM
optical discs. The G68 is thus an ideal complement to a G Series
optical disc player like the G96.
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2
Smart Source feature
The G68’s ’Smart Source’ feature continually monitors the digital
inputs and automatically loads the correct decoding software for
the format, speaker layout, and encoding of the incoming signal.
This capability is enhanced by MHR SmartLink, which provides
a digital link between a Meridian optical disc player or HD621
and surround controller, carrying explicit information about the
nature of the datastream as well as encrypted high-resolution
digital signals from DVD-Audio – the first system of its kind to
be approved. Virtually all other manufacturers oblige you to go
through an analogue connection, losing quality in the process.
You can also store separate parameters for each source (such
as DVD) depending on whether the incoming signal is stereo or
surround, so that any source material is played with the decoder of
your choice.
Meridian Room Correction
The G68 incorporates Meridian Room Correction, a unique system
that compensates for acoustic deficiencies in your listening room,
particularly at the bass end. It achieves this by automatically
analysing the room response and then using powerful Digital
Signal Processing (DSP) technology to build a set of filters, called a
profile. This audibly improves the sound by eliminating resonances
and making the decay time consistent for frequencies below about
250Hz.
Multi-zone capabilities
The G68 provides multi-zone/recording features, consisting of
stereo digital and analogue outputs providing independent sources
to two additional zones. Meridian communications (DIN and
BNC) are also included along with RS232 and USB serial ports for
maintenance and control, an infra-red sensor input, and up to three
12V triggers.
Integral tuner
The G68 includes an integral tuner which provides AM (LW/MW)
and FM (VHF stereo Band II) reception and is fitted with its own
A/D stage. Digital signal processing provides a sophisticated FM
stereo blend/width control which allows the user to minimise noise
on a received signal. There is also a DSP-based low-pass filter and
a whistle filter for improved AM reception.
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3
Digital inputs 6 coax digital inputs, 4 optical digital inputs, 2 6-channel coax inputs, all MHR.
USB input 1 USB digital input allows connection to a Windows PC or Macintosh.
Analogue inputs 5 stereo unbalanced inputs; 1 6-channel unbalanced input.
Digital outputs L+R, C+SUB, SIDE L+R, REAR L+R Meridian SpeakerLink outputs.
Unbalanced
analogue outputs
LZ/RZ.
Balanced analogue
outputs
Main L/R, Centre/Sub, Rear L/R, Side L/R.
Zone/Tape 2 analogue outputs, 2 digital outputs.
Video 1 component video output, 3 component video inputs.
Trigger output 12VDC/100mA configurable by source.
Comms 2 5-pin 240º DIN sockets, BNC socket, USB, RS232 interface.
Conversion Up to 192kHz, 24-bit Sigma-Delta conversion on all analogue inputs and outputs.
Formats Include Dolby Digital, DTS, MPEG Surround, and AAC.
DSP modes Direct, Music, Trifield, Ambisonics, Super, Stereo, MusicLogic, Mono, TV Logic, PLIIx Music, PLIIx Movie, PLIIx THX,
Discrete, Cinema, PLIIx Mov6, PLIIx Mus6, THX, THX Surround EX, THX Ultra2 Cinema, THX Music.
Power Universal supply 100-240V, 50-60Hz, 40W.
Processing 5 Motorola 56367s running at 150MHz to give a total of approximately 750MIPS. 48-bit arithmetic throughout.
Dimensions 440mm x 132mm x 350mm (17.32" x 5.20" x 13.78") WHD.
Weight 10kg (22lb) approx.
Controls Front-panel soft keys include control of Source, Copy, Zone, Preset, etc. Standby and display buttons, volume
control, mute. Full remote control of all features via MSR+.
Display Multi-character dot-matrix Vacuum Fluorescent Display.
Indicators Standby button lit when off.
Specifications
I n t r o d u c t i o n
4
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Installing the digital surround controller
Unpacking
The G68 Digital Surround Controller is supplied with the following
accessories:
• MSR+ remote control with batteries, manual, and spare key caps.
• Meridian Comms lead.
• Power cord.
• This manual.
•
Meridian G Series System Guide.
• Meridian Configuration Program Guide.
• AM antenna.
• FM antenna.
• FM antenna (Belling-Lee) adaptors.
If any of these items are missing please contact your dealer.
Note: You should retain the packaging in case you need to
transport the unit.
This chapter explains how to install the digital surround controller. It describes what you
should find when you unpack the product, and how you should connect it to the other
equipment in the system.
You should not make any connections to the product or to any other component in the
system while the AC power supply is connected and switched on.
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Audio inputs
COPY
ZONE 2
ZONE 3
DIG OUT COMMS
L
L
R
R
ANALOGUE OUT
TRIG 2
TRIG 3
+12V 100mA
COMPONENT OUT
Pb/B Pr/R Y/G
Y2 CABLE
Pb/B Pr/R Y/G
Y3 SAT
Y1 DVD
LZ
RZ
MAIN L MAIN R CENTRE SUB
REAR L REAR R SIDE L SIDE R
ANALOGUE OUT
SPEAKERLINK OUT
REAR L+RSIDE L+RC+SUBL+R
MASTER
(ONE ONLY, THIS ROW)
ON OFF
MERIDIAN COMMS
TRIGGER 1
+12V 100mA
OPTICAL IN
O3 O4
D12 D10 D8 DISC
D11
D9 VCR2
D7 CD
SURR C/LFE L/R
MULTI ANALOGUE IN
MULTI DIGITAL IN
A8 A7VCR1 A6 CABLE A5 TV A4 TAPE SURR R
MIC
LFE RIGHT
SURR L CENTRE LEFT
MA1
AUX
MD1
MD2
DVD
ANALOGUE IN
DIGITAL IN
L
R
IR IN
MAINTENANCE
USB RS232
L
OPT IN
O5
USB AUDIO IN OPT IN
ANTENNA
FM
AM
GND
O1SAT O2 GAME
Optical inputs 3 and 4
Multichannel digital coax inputs
Digital coax inputs
USB input
Multichannel analogue input
Optical input 2
Analogue inputs
Use this connector To connect to this
MULTI DIG IN 1 (DVD) or D1-D3,
MULTI DIG IN 2 or D4-D6
The multichannel digital output of a source such as the G96 DVD Transport, a Meridian
HD621, or three digital sources.
DIG IN D7 (CD), D8 (DISC), D9 (VCR2),
D10-D12
The digital output of a source such as a G08 24-bit Upsampling CD Player or DAB tuner.
MULTI AN IN (AUX) or A1-A3 A multichannel analogue source such as an SACD player.
ANALOGUE IN A4 (TAPE), A5 (TV),
A6 (CABLE), A7 (VCR1)
The unbalanced analogue output of a source such as a tape recorder, TV tuner, cable box,
or VCR.
USB INPUT U1 A computer USB port.
OPTICAL IN O2 (GAME), O3-O5 The optical output of a source such as a satellite receiver or computer game console.
ANALOGUE IN MIC (A8-L) An SPL meter for use in room correction configuration.
The default assignment of the sources to each input is shown in brackets after the input name in the above table. RADIO is normally
assigned to the internal tuner. To assign a different input to a source see
Configuring sources
, page 24.
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You can connect up to 12 digital coax sources to the G68 Digital
Surround Controller.
• Connect the digital source to one of the digital input sockets of
the digital surround controller, using a 75Ω screened coax phono
lead.
If the source is a Meridian product connect together the COMMS
sockets using the Comms lead provided.
To connect to a digital source (eg G06 24-bit CD Player)
G68 Digital Surround Controller
DIG IN
D7 CD
DIGITAL LEAD
COMMS LEAD
COMMS
DIGITAL OUT COMMS
G06 24-bit CD Player
To connect to an analogue source (eg TV tuner)
TV tuner
OUTPUT
PHONO LEADS
G68 Digital Surround Controller
ANALOGUE IN
A5 TV
You can connect up to eight analogue sources to the G68 Digital
Surround Controller.
• Connect the analogue source to one of the analogue input
sockets of the digital surround controller, using screened coax
phono leads.
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To connect to a computer via USB
Computer
USB
USB A-B CABLE
G68 Digital Surround Controller
USB INPUT
You can connect a Windows PC or Macintosh to the G68 via the
USB input to allow you to use the G68 as a digital audio output
device.
On a PC, Windows XP/SP2 or later is required. On a Macintosh,
OSX 10.4 or later is recommended. Linux computers that support
USB audio class drivers can also be used.
• Connect the computer’s USB port to USB INPUT U1 on the G68
using a standard USB A-B cable. The flat rectangular end plugs
into the PC and the square end into the G68.
The first time that the G68 is plugged in to the PC or Macintosh
it will automatically be recognised, and appropriate drivers will be
installed. The G68 will then appear as a sound output device called
Meridian 48k/16 in the Sound control panel (PC) or Sound
system preferences panel (Macintosh).
Note: The computer volume control will have no effect on the
playback volume; use the Meridian system control instead.
To connect to a Meridian Smart Source with digital multichannel outputs (eg HD621 HDMI Audio Processor)
HD621 HDMI Audio Processor
3 x DIGITAL LEADS
COMMS LEAD
G68 Digital Surround Controller
MULTI DIG IN 1
(DVD)
COMMS
COMMS
SMARTLINK
The G68 Digital Surround Controller provides 12 digital coax inputs,
six of which can be used as two multichannel inputs from a source
with a suitable digital multichannel output, such as the HD621
HDMI Audio Processor.
• Connect the SmartLink outputs 1/2, 3/4, and 5/6 on the HD612
to the MULTI DIG IN 1 on the G68, using three 75Ω screened
coax phono leads.
• Connect together the COMMS sockets using the Comms lead
provided.
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To connect to a source with analogue multichannel outputs (eg SACD player)
SACD player
6 x PHONO LEADS
DIGITAL LEADS
G68 Digital Surround Controller
MULTI AN IN
MULTICHANNEL
OUTPUT
DIG IN D8 DISC
DIGITAL
OUTPUT
The G68 Digital Surround Controller provides eight analogue
inputs, three of which can be used as a multichannel input from a
source with a suitable analogue multichannel output, such as an
SACD player.
• Connect the ANALOGUE OUT sockets from the source to the
analogue multichannel inputs on the digital surround controller
using six phono leads.
• Optionally connect a digital output from the source to digital
input D8 (DISC) on the digital surround controller, using a digital
phono lead.
You can then select the source corresponding to the multichannel
input (AUX) for playing surround material, and the source
corresponding to the digital input (DISC) to decode other formats.
Note: Multichannel analogue sources may have subwoofer level
outputs that vary by up to 10dB, so it may be necessary to reduce
the LFE level to give correct bass integration; see
DSP presets
, page
37.
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Audio outputs
COPY
ZONE 2
ZONE 3
DIG OUT COMMS
L
L
R
R
ANALOGUE OUT
TRIG 2
TRIG 3
+12V 100mA
COMPONENT OUT
Pb/B Pr/R Y/G
Y2 CABLE
Pb/B Pr/R Y/G
Y3 SAT
Y1 DVD
LZ
RZ
MAIN L MAIN R CENTRE SUB
REAR L REAR R SIDE L SIDE R
ANALOGUE OUT
SPEAKERLINK OUT
REAR L+RSIDE L+RC+SUBL+R
MASTER
(ONE ONLY, THIS ROW)
ON OFF
MERIDIAN COMMS
TRIGGER 1
+12V 100mA
OPTICAL IN
O3 O4
D12 D10 D8 DISC
D11
D9 VCR2
D7 CD
SURR C/LFE L/R
MULTI ANALOGUE IN
MULTI DIGITAL IN
A8 A7
VCR1
A6
CABLE
A5
TV
A4
TAPE SURR R
MIC
LFE RIGHT
SURR L CENTRE LEFT
MA1
AUX
MD1
MD2
DVD
ANALOGUE IN
DIGITAL IN
L
R
IR IN
MAINTENANCE
USB RS232
L
OPT IN
O5
USB AUDIO IN OPT IN
ANTENNA
FM
AM
GND
O1SAT O2 GAME
SpeakerLink outputs
Zone 2 and 3 audio outputs
Balanced analogue outputs
Analogue outputs
Use this output To connect to this
L+R, C+SUB, SIDE L+R, REAR L+R Digital loudspeakers, using Meridian SpeakerLink leads or standard CAT5 network
cables. Connect the master speaker to the appropriate socket on the lower row.
Connect the slave speakers to the other sockets as shown in the following diagrams.
ANALOGUE OUT MAIN L, MAIN R, CENTRE,
SUB, REAR L, REAR R, SIDE L, SIDE R
The balanced analogue input of a power amplifier or active loudspeakers, using XLR
connections.
ANALOGUE OUT LZ/RZ A pair of analogue active speakers, the unbalanced analogue inputs of a power
amplifier, or up to two active subwoofers, using screened coax phono leads.
COPY ZONE 2, ZONE 3 ANALOGUE OUT The unbalanced analogue input of a tape recorder, or second and third-room systems.
COPY ZONE 2, ZONE 3 DIG OUT The digital input of a digital recorder, or second and third-room systems.
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To connect the G68 to Meridian DSP loudspeakers (daisy chain)
G68 Digital Surround Controller
SPEAKERLINK
OUTPUTS
SPEAKERLINK LEAD
SPEAKERLINK LEAD
SPEAKERLINK LEAD
DSP Loudspeaker – Centre (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Subwoofer – Sub (Slave)
DSP Loudspeaker – Main Left (Master)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Main Right (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Rear Left (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Rear Right (Slave)
SPEAKERLINK
INPUT OUTPUT
SPEAKERLINK
INPUT OUTPUT
This is an alternative to the “home run” wiring configuration
shown in the next section.
The G68 automatically assumes that the main left speaker is the
master, unless it is analogue, in which case the DSP centre, left
side, or left rear is used in order of priority (unless explicitly set
differently in the Meridian Configuration program).
• Connect the appropriate
SpeakerLink output on the lower row
of the G68 to the master digital speaker (typically the main left
speaker), using a Meridian SpeakerLink lead.
• Connect the appropriate SpeakerLink outputs on the G68 to one
of each of the remaining pairs of speakers, using a Meridian
SpeakerLink lead.
• Link each pair of speakers together with a Meridian SpeakerLink
lead, out of the first speaker and into the second speaker, as
shown in the diagram.
The speakers should then be configured appropriately as master
and slaves, and Left, Right, Centre, Surround; see
Meridian DSP
Loudspeaker User Guide
for more details.
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To connect the G68 to Meridian DSP loudspeakers (home run)
G68 Digital Surround Controller
SPEAKERLINK
OUTPUTS
SPEAKERLINK LEAD
SPEAKERLINK LEAD
SPEAKERLINK LEAD
DSP Loudspeaker – Centre (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Subwoofer – Sub (Slave)
DSP Loudspeaker – Main Left (Master)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Main Right (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Rear Left (Slave)
SPEAKERLINK
INPUT OUTPUT
DSP Loudspeaker – Rear Right (Slave)
SPEAKERLINK
INPUT OUTPUT
SPEAKERLINK
INPUT OUTPUT
This is an alternative to the “daisy chain” wiring configuration
shown in the previous section.
The G68 automatically assumes that the main left speaker is the
master, unless it is analogue, in which case the DSP centre, left
side, or left rear is used in order of priority (unless explicitly set
differently in the Meridian Configuration program).
• Connect the appropriate
SpeakerLink output on the lower row
of the G68 to the master digital speaker (typically the main left
speaker), using a Meridian SpeakerLink lead.
• Connect the appropriate SpeakerLink outputs on the G68 to each
of the remaining speakers, using a Meridian SpeakerLink lead.
The speakers should then be configured appropriately as master
and slaves, and Left, Right, Centre, Surround; see
Meridian DSP
Loudspeaker User Guide
for more details.
Alternatively you can use standard CAT5 network cables instead of
SpeakerLink leads.
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To connect the G68 to power amplifiers or to analogue active and passive speakers powered by a Meridian G41
CHANNEL 1 INPUTS
1 3 4
A B
2
CHANNEL 3
G41 Powered
Crossover/Amplifier
CHANNEL 2
CH. A CH. B
ANALOGUE OUT
G68 Digital Surround Controller
A330
Main right
A330
Centre
P330
Rear right
P330
Rear left
A330
Main left
Analogue subwoofer
COMMS
INPUT OUTPUT
PHONO
The G68 provides eight balanced and two unbalanced analogue
outputs to allow you to connect to power amplifiers and passive
loudspeakers, or 300 Series Active and Passive Installation
Loudspeakers powered by the G41 Active Crossover Amplifier.
• Connect the LEFT and RIGHT analogue outputs to the power
amplifier inputs for the main front loudspeakers.
• Connect the CENTRE analogue output to the power amplifier
input for the centre loudspeaker.
• Connect the REAR L and REAR R analogue outputs to the power
amplifier inputs for the rear loudspeakers.
When the G41 is used with five speakers, as shown above, inputs
A and B for the rear speakers are unbalanced inputs, so use the
unbalanced LZ and RZ outputs.
• If the system includes a subwoofer connect the SUB analogue
output to an active analogue subwoofer, such as the Meridian
SW1600.
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To connect to an active subwoofer (eg Meridian SW1600 or SW5500)
Subwoofer
PHONO LEAD
G68 Digital Surround Controller
SUB
CROSSOVER
INPUT
DIRECT
INPUT
The Meridian SW1600 and SW5500 subwoofers provide both
digital and analogue inputs, allowing you to connect them to
either the digital or analogue subwoofer outputs of the G68. The
analogue connection must be used if you do not have a digital
main speaker.
• Connect the SUB analogue output socket from the G68 Digital
Surround Controller to the subwoofer’s line-level input using a
phono lead.
Use the RZ output (or RZ and LZ if you have two subwoofers).
The digital surround controller provides a very high-quality
crossover for the subwoofer, and for best results you should use
this instead of the subwoofer’s crossover. To do this remove any
crossover in the subwoofer or set it to its highest setting (eg
200Hz). The subwoofer crossover can be set from the front panel of
the G68; see
Subwoofer crossover frequency
, page 34.
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COPY
ZONE 2
ZONE 3
DIG OUT COMMS
L
L
R
R
ANALOGUE OUT
TRIG 2
TRIG 3
+12V 100mA
COMPONENT OUT
Pb/B Pr/R Y/G
Y2 CABLE
Pb/B Pr/R Y/G
Y3 SAT
Y1 DVD
LZ
RZ
MAIN L MAIN R CENTRE SUB
REAR L REAR R SIDE L SIDE R
ANALOGUE OUT
SPEAKERLINK OUT
REAR L+RSIDE L+RC+SUBL+R
MASTER
(ONE ONLY, THIS ROW)
ON OFF
MERIDIAN COMMS
TRIGGER 1
+12V 100mA
OPTICAL IN
O3 O4
D12 D10 D8 DISC
D11
D9 VCR2
D7 CD
SURR C/LFE L/R
MULTI ANALOGUE IN
MULTI DIGITAL IN
A8 A7
VCR1
A6
CABLE
A5
TV
A4
TAPE SURR R
MIC
LFE RIGHT
SURR L CENTRE LEFT
MA1
AUX
MD1
MD2
DVD
ANALOGUE IN
DIGITAL IN
L
R
IR IN
MAINTENANCE
USB RS232
L
OPT IN
O5
USB AUDIO IN OPT IN
ANTENNA
FM
AM
GND
O1SAT O2 GAME
Component inputs
Component outputs
Use this connection To connect to this
Y1 (DVD), Y2 (CABLE), Y3 (SAT)
The component video output of a video source (interlaced or HD), using a 75Ω coax
cable with phono connectors.
COMPONENT OUT
The component video input of a TV or monitor, using a 75Ω coax cable with phono
connectors.
Video connections
I n s t a l l i n g t h e
d i g i t a l s u r r o u n d
c o n t r o l l e r
1 6
COPY
ZONE 2
ZONE 3
DIG OUT COMMS
L
L
R
R
ANALOGUE OUT
TRIG 2
TRIG 3
+12V 100mA
COMPONENT OUT
Pb/B Pr/R Y/G
Y2 CABLE
Pb/B Pr/R Y/G
Y3 SAT
Y1 DVD
LZ
RZ
MAIN L MAIN R CENTRE SUB
REAR L REAR R SIDE L SIDE R
ANALOGUE OUT
S
PEAKER
L
INK OUT
REAR L+RSIDE L+RC+SUBL+R
MASTER
(ONE ONLY, THIS ROW)
ON OFF
MERIDIAN COMMS
TRIGGER 1
+12V 100mA
OPTICAL IN
O3 O4
D12 D10 D8 DISC
D11
D9 VCR2
D7 CD
SURR C/LFE L/R
MULTI ANALOGUE IN
MULTI DIGITAL IN
A8 A7
VCR1
A6
CABLE
A5
TV
A4
TAPE SURR R
MIC
LFE RIGHT
SURR L CENTRE LEFT
MA1
AUX
MD1
MD2
DVD
ANALOGUE IN
DIGITAL IN
L
R
IR IN
MAINTENANCE
USB RS232
L
OPT IN
O5
USB AUDIO IN OPT IN
ANTENNA
FM
AM
GND
O1SAT O2 GAME
AM tuner aerial
Trigger output 1
FM or DAB/FM tuner aerial
RS232 connection
Infra-red repeater input
Power & fuse
Meridian DIN Comms connection
Meridian BNC Comms connection
Trigger outputs 2&3
USB connection
Use this connection To connect to this
DIN COMMS Other Meridian G Series, 500 Series, or 800 Series equipment, or Meridian DSP loudspeakers.
BNC COMMS Meridian components with BNC Comms.
RS232 connection A computer, for configuring the digital surround controller.
USB connection A computer, for configuring the digital surround controller.
IR IN A G12 IR Receiver, or approved alternative infra-red receiver. Contact your dealer for details.
ANTENNA FM, AM FM and AM antennae.
TRIG 1, TRIG 2, TRIG 3* Other equipment, via mono 3.5mm jack plug outputs (centre pin hot) providing 12VDC. They are always
low in standby. By default they are high for all sources, so can be used to bring a G Series power
amplifier out of standby. Alternatively you can program them to be high for specific sources; eg to control
a projection screen.
Tuner and communications connections
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